As concentration distribution changes have important effects on material structures and properties, controlling the concentration distribution is essential to alloy performance. The aim of the present work is to control and adjust the concentration distribution by the static magnetic field. It is found that the magnetic field disperses grain boundary segregation and causes the uniform distribution of concentration. Further, by the three-dimensional computed tomography (3D-CT) reconstruction, the flow distribution is seen and the effect mechanism of the magnetic field is revealed. The present work may clarify the ambiguous understanding on the effect of the static magnetic field on solidification process.

由于浓度分布的变化会对材料的结构和性能产生重要影响，因此控制浓度分布对于合金性能至关重要。本工作的目的是通过静磁场控制和调节浓度分布。发现磁场分散了晶界偏析并引起浓度的均匀分布。此外，通过三维计算机断层扫描（3D-CT）重建，可以看到流量分布并揭示磁场的影响机理。目前的工作可能会澄清对静磁场对凝固过程影响的模糊理解。